Adjustable joiner



-June 9, 1931. I H, c, CATTELL 1,809,401

` ADJUSTABLE JoINER Fied laren 5,- 192s AINI/Elv-TOR.

S21/wlan C. @aftell- BY 7g Q @zza/2 l A TTORNEY Patented June 9, 1931PA'TT HERMAN' C. OATTELL, OF ALLIANCE, OHIO ADJUSTABLE JOINERApplication filed March 5,

This invention relates to an improvement in a tool or implement for useby carpenters or other mechanics, known as an adjustable joiner.

The purpose ot this invention is to provide an extension toolparticularly useful in taking lengths and bevels to assist in litting aclosure into an opening. A further object und purpose ot the inventionto produce a tool which can be readily fitted into an openino' and thenwithdrawn, and provided with means so that it can be retracted andremoved from the opening and when released will immediately assume theform in which it l5 held when in the openino.

The accompanying drawings show an em bodiment oit my invention and inthese drawings-- Figure 1 is an elevation oit' the complete 29 tool.

Figure of Fi g. 1.

Figure 3 is an enlarged section taken on line B--B of Fig. 1.

Figure 4 is an enlarged section ot the adjustable spring device shown inFig. 1.

In the construction of my device I provide preferably four telescopingnumbers 1, 2, 3, and These members are preferably of round tubular formbut may be square or any other convenient form. Part 1 is largest indiameter and part l is smallest. I have in mind, however, I may use agreater or smaller number of telescoping parts depend-v ing upon thelength of the device required. The outer ends of parts 1 and 3 arefitted with knurled sleeves 5 and 6 which are threaded and operate onbevel threads to compress the end of the tube which is slotted, securingit in position on the part sliding within it. These knurled sleeves arefor the purpose ont' approximately setting the tool in position.

Between parts 2 and 3 I provide sleeve 7 which contains coil spring 8which travels on the smaller tube 3 and rests against bushing 9 in oneend of the sleeve and against the end of tube 2 at the other.` This isarranged so that the sleeve can move freely endwise allowing the springtok be coma section taken on line A--A 192s. serial no. 259,333.

pressed. The sleeve 7 is provided with two screws 10 and 11 threadedthrough the sleeve and projecting into slots 12 and 13 in the largertube which slots are long enough to allowfor proper springaction anddetermine the distance which the joiner can be shortened to withdraw thetool from an opening. The bushing end'ot the sleeve has a smallthumb-wheel set screw ,14 Y threaded through the sleeve? and clampsbushing 9 securing the sleeve to smaller tube 3. It will thus be seenthat after the tool is set to a definite length, the operator by meansof this spring joint can contract the length oi the tool for the purposeof easy removal and the spring will act to return the tool to thepredetermined length when released.

. At the outer ends ot' parts 1 and l I provide metal tongues or staight edges l5 and 16, which may be made in varying lengths and shapesto suit the class of work required. The ones which I have shown areespecially adapted for cutting stair risers and aretitted up in pairsand provided with series of holes 17 into which short stud 18 may bethreaded at right angles to the plane, making it possible to rest thetool by these studs 18 on the rough stair horse then hook the same overthe top jointed edge ot' the riser ready to mark the length for cutting.I providethe ends of parts 1 and 4 with pressed, metal brackets 19through which beveled headed bolt 2O is passed, being secured by thumblever nut 21. This bevel head is counter'- sunk into the aforementionedmetal tongue 15. Compression spring 22 is located within the metalbracket 19 and serves to prevent the screw 2O from dropping out in casethe plumb lever nut 21 is removed from the screw.

Spring 22 abuts against nut 23 which isA threaded onto screw 20. Bymeans ot' this arrangement the tongue may be quickly removed by partlyloosening the thumb lever nut 21 allowing the head of the screw to comeout of the countersunk in the tongue, then shift-ing the body of thebolt through a short slot 24Vto a hole large enough to release the bolthead.

It will thus been seen that the metal tongues sov 15 and 16 can beadjusted in parallel or otherwise for openings for shelving,stair-risers, and treads, easements, sash, counters, doors, porchcolumns, railings, panels, siding, and many other uses. It is especiallyadapted to building boX stairs, winding stairs, etc.

Having fully described my invention, what I claim as new and desire tocover by Letters Patent is:

l. A tool of the class described comprising an extension member composedof telescoping sections, a sleeve adjustably secured to one section, abushing within the sleeve, a slot in the next larger adjoining section,a projection on the sleeve adapted to extend within the slot, a springwithin the said sleeve interposed between the bushing and the end of thesaid adjoining section, a bracket secured to each end of said extensionmember and a tongue pivotally mounted on said bracket.

2. A tool of the class described comprising an extension member composedof telescoping sections, a sleeve adjustably secured to one section, abushing within the sleeve, a slot in the next larger adjoining section,a projection on the sleeve adapted to extend within the slot, a springwithin the said sleeve interposed between the bushing and the end of thesaid adjoining section, a bracket secured to one end of said extensionmember, a bolt passing through the said bracket, a tongue pivotallymounted on said bolt, a lock nut threaded on said bolt, a springinterposed between the bracket and the said locknut and a binding nutthreaded on said bolt adapted to bind the tongue against movement withrespect to the extension member.

In testimony whereof, I have signed this specification.

HERMAN C. CATTELL.

